The world is becoming more and more interconnected every day. As it becomes possible to communicate with anyone in the world in real time, there is really only one remaining obstacle: language. There are over 6,500 languages spoken around the world. The second most common of these languages, after Mandarin, is English. English is considered to be one of the most important languages to learn for a variety of reasons.
Most international business in conducted in English, so if you are looking to be employed by an international company, you will likely need to meet minimum English requirements in order to advance your career. Or, if you are interested in studying abroad in an English-speaking country, most schools will require that you have a minimum understanding and proficiency in English. Even in non-English speaking countries, you will often find that most people's second language is English.